error handling patterns

SKILL.md

Expert decision frameworks for error handling choices. Claude knows Swift error syntax — this skill provides judgment calls for error type design and recovery strategies.

When Result wins: Parsing, validation, operations where failure is common and needs explicit handling. Forces exhaustive switch.

When throws wins: Network calls, file operations where failure is exceptional. Cleaner syntax with async/await.

Expert error handling decisions for iOS/tvOS: when to use throws vs Result, error type design trade-offs, recovery strategy selection, and user-facing error presentation patterns. Use when designing error hierarchies, implementing retry logic, or deciding how to surface errors to users. Trigger keywords: Error, throws, Result, LocalizedError, retry, recovery, error presentation, do-catch, try, error handling, failure Source: kaakati/rails-enterprise-dev.

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